body {  
    font-size: 20px;
    background-color: tan;
    width: 80%;
    margin: 0 auto;
}

header {
    font-size: 1.5cm;
    text-align: center;
    color: saddlebrown;
    font-family:"微软雅黑";
    font-weight: bold;
    /* border: 1px  sienna solid; */
    height: 100px;
    line-height: 90px;
    background-color: rgb(255, 255, 255);
}

.bg-demo {
    background-color: rgb(255, 255, 255);
    width: 60%;
    margin: 0 auto;
}


h1 {
    line-height: 80px;
    text-align: center;
    font-size: 50px;
    font-family: "幼圆";
    /* font-weight: normal; */

}

section h2 {
    text-align: center;
    font-family: "幼圆";
     /* font-weight: normal;  */
     color: rgb(121, 61, 27);
     border-bottom: 2px rgb(255, 255, 255) solid;
     width:100%;
     margin: 0 auto;
   
}
h3 {
    font-family: "微软雅黑";
     font-weight: normal; 
     font-size: 25px;
     color: rgb(141, 98, 69); 
}


/* main {  */
    text-align: center;
}

section p {
    color: rgb(121, 61, 27);
    text-align: center
}
/* section p { 
    font-size: 18px;
    font-weight: normal;
    color: dimgrey;
    text-align: center;
}


/* font-family: Edwardian Script ITC */
 p {
    text-align: center;
    color: rgb(255, 255, 255);
    font-size: 18px;
    font-weight: bold;
    font-weight: normal;

    /* line-height: 1.5px; */
    
}
div {
    font-size: 16px;
}

footer {
    text-align: center;
    color: bisque;
    font-size: 18px;
    font-family: Broadway;
   letter-spacing: 2px;
}

footer p {
    font-size: 9px;
    font-family: "微软雅黑";
}
span {
    margin-left: 2em;